Just wanted to link to a couple of resources about GEOS copy protection. Here’s a great article about how it works.
And here is a link about how to reinstate it. Strange that anyone would want to, but it’s possible apparently.
In both cases, use google chrome and let it translate from german to english (or whatever you speak).
……………….The Commodore 64 / 128 GEOS Site
I hope that this will be a successful site for you.
Thank you for starting this up!